- 试题详情及答案解析
- They thought __________ important to look right and left when ________ the road.
| A．it’s; cross | B．it; to cross |
| C．it; crossing | D．it was; to cross |
- 答案：C
- 试题分析：句意：他们认为当过马路时左右看是重要的。此处it作为形式宾语，to look right and left作为真正主语。When引导的状语从句的主语和谓语与主句的主语和谓语相同时，省略主语和谓语。When they are crossing the road="when" crossing the road。故选C。
考点：考查省略句的用法。